|Número de publicación||US4989760 A|
|Tipo de publicación||Concesión|
|Número de solicitud||US 07/337,091|
|Fecha de publicación||5 Feb 1991|
|Fecha de presentación||12 Abr 1989|
|Fecha de prioridad||14 Abr 1988|
|Número de publicación||07337091, 337091, US 4989760 A, US 4989760A, US-A-4989760, US4989760 A, US4989760A|
|Cesionario original||Liu Songzeng|
|Exportar cita||BiBTeX, EndNote, RefMan|
|Citas de patentes (11), Citada por (9), Clasificaciones (7), Eventos legales (3)|
|Enlaces externos: USPTO, Cesión de USPTO, Espacenet|
The present invention relates to tools for sucking liquids based on siphon principle, particularly to siphon pipes for the use of sucking oil liquid or base liquid and acid.
In the prior art, while it is recessary to suck liquid from a container, such as to suck gasoline from an oil tank, the operator usually picks up a hose to put one end of it into the gasoline in the oil tank, then has his mouth onto the other end of it to suck out part of the gasoline, resulting in a siphon state of the hose (siphon pipe). This is very inconvenient in operation, very unsanitary, and very harmful to the operator's helth. Hence, in recent years, many improved siphon tools were provided, such as "the car-borne oiler" disclosed in Chinese patent No. 86203750. Though these improved siphon tools are rather effective, their structures are complicated and their costs are high.
The object of the present invention is to provide a siphon pipe which has simple structure and is safe and easy to operate.
Another object of the present invention is to provide a self-fill siphon pipe for increasing the liquid inertia, particularly adaptable for liquids of higher viscosity and smaller specific weight.
Still another object of the present invention is to provide a self-fill siphon pipe capable of filtering away the floating particles in the liquids.
Other objects and advantages of the present invention will become apparent in the following description and the appended claims.
According to the present invention, there is provided herewith a siphon tool for sucking liquid comprising a straight tube, a hose fitted onto one end of the straight tube and in fluid communication with the straight tube, a one-way valve fixed on the other end of the straight tube, which allows only the liquid to enter into the interior of the straight tube.
According to another aspect of the present invention, there is provided a siphon tool comprising a straight tube, a hose fixed onto one end of the straight tube, a one-way valve fixed on the other end of the straight tube, which allows only the liquid to enter into the interior of the straight tube, and additionally a tubular piston with a one-way valve slidable in the straight tube, said one-way valve on said tubular piston has a same communication direction as that of the one-way valve on the end of the straight tube.
On the siphon tool of the present invention, preferably a detachable filter means is fitted on the liquid entering and of the one-way valve on the end of the straight tube.
Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. Howvever, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus, are not limitative of the present invention, and wherein:
FIG. 1 is a diagrammatic exploded view of one embodiment of the siphon pipe according to the present invention;
FIG. 2 is an enlarged view of the one-way valve pad in FIG. 1;
FIG. 3 is a view of the siphon pipe of another embodiment of the present invention; and
FIGS. 4a-4b show embodiments with buffer means according to the present invention.
FIG. 1 shows a self-fill siphon pipe according to the present invention which comprises: a hose 1, a straight tube 2 and a one-way valve 3. One end of the straight tube 2 has a hose joint 18 which is connected and fitted onto the hose 1. The one-way valve 3 is constituted by a valve base 4 and a valve pad 5.
FIG. 2 is an enlarged view of the valve pad 5. At the center portion of the valve pad is a central diaphragm 6. When the valve pad 5 is fitted into the valve base 4, the central diaphragm exactly covers the central hole 7 of the valve base, acting on the control of the direction of the liquid flow. Inside the valve base, there is screw thread matching with the external screw thread at the lower end of the straight tube 2 so as to fix the one-way valve onto the lower end of the straight tube 2. After it is well fixed, the one-way valve 3 allows the liquid to only flow into the interior of the straight tube from the exterior.
For the use of the siphons pipe in the present invention, it suffices to insert the one-way valve end of the straight tube into the liquid as deep as possible and then to move said tube backwards and forwards (up and down) in the direction in parallel with the axis of the straight tube so as to push open the valve pad of the one-way valve to let liquid enter the pipe by its own inertia. When the liquid having entered the pipe reaches a required volume, the siphon pipe comes into a normal siphon state.
The different parts of the siphon pipe according to the present invention, such as the straight tube 2 and the one-way valve 3 are preferably made of plastics. The length of the straight tube is preferably 5˜10 cm longer than the depth of the container for the liquid so as to operate more conveniently. The inner diameter of the straight tube 2 is preferably larger than the inner diameter of the hose 1 so as to raise the speed of filling the liquid.
The one-way valve of the siphon tube in the present invention can also take other forms such as a one-way valve 3 as shown in FIG. 3. It is also constituted by the valve base 4 and the valve pad 5, but it is inserted and fixed into the end joint of the straight tube 2. At the liquid-entering end of said one-way valve 3, a mesh filter 8 is set to filter away the floating particles in the liquid. The mesh filter 8 can be in the shape of a bowl and be fixed onto the liquid-entering end of the one-way valve 8.
This kind of siphon pipe as described above will lead to a small drop of the liquid filling efficiency when used for liquids of heigher viscosity and smaller specific weight. Because of this, another embodiment according to the present invention provides a fast and easy siphon pipe as shown in FIG. 3. This kind of siphon pipe has a structure similar to the one shown in the embodiment in FIG. 1, but a tubular piston 10 with an one-way valve is set inside the straight tube. The tubular piston 10 is capable of freely sliding within said straight tube 2. The tubular piston 10 is also constituted by a valve-base 11 and a valve pad 12. The outer diameter of said valve-base has a sliding fit with the inner diameter of the straight tube 2. Said tubular piston 10 is made of material having a larger density whose specific weight is larger than 1. The materials which can be selected for use are metal, ceramics, glass or other composite materials. In the preferred embodiment according to the present invention, the tubular piston used is ceramic meterial with a specific weight 1·2˜1·4, and its merit lies in its application to sucking base liquid and acid, etc.
For the use of the siphon pipe shown as in FIG. 3, it is only necessary to insert one end of the straight tube having a one-way bottom valve 3 into the liquid and then to move up and down. While the straight tube moves down, the liquid pushes open the one-way valve 3 to enter into the siphon pipe. While the straight pipe moves upwards, the one-way bottom valve 3 closes to let the liquid stay in the pipe and the tubular piston 10 moves downwards due to its own inertia to result in the liquid below the tubular piston 10 pushing open the valve pad 12 and entering into the portion above the tubular piston 10. While the straight tube 2 moves downwards, once more the tubular piston 10 moves upwards due to its inertia resulting in a negative pressure in the straight tube portion below the tubular piston 10 and again a part of the liquid being sucked into the pipe. So on and so forth in this way, the operator moves the straight tube 2 up and down intermittently, the liquid level in the siphon pipe will continuously rise. When the liquid level in the pipe reaches a certain height, the hose is bent downwards and a siphon phenomenon will be created.
Because there is a looser sliding fit between the tubular piston 10 and the straight tube 2, the tubular piston 10 will move fast relative to the straight tube 2 and possibly collide with the one-way valve 3 at the lower end portion and the upper end wall of the straight tube 2, as the siphon pipe rapidly moves up and down in operation. In this case, especially when the tubular piston is made of ceramic material, such collision will produce adverse effects such as piston cracking. Because of this, the present invention provides a further improvement, i.e., buffer means is provided between the tubular piston 10 and the one-way valve 3 as well as between the tubular piston 10 and the upper end wall of the straight tube 2, as shown as FIG. 4. The first form of the buffer means is shown in FIG. 4a. In it, a rubber ring 13 is set on the upper surface of the one-way valve 3 and another rubber ring 14 is set on the upper end wall of the straight tube 2. FIG. 4b shows a structure similar to that of FIG. 4a, but springs 15 and 16 are used to replace the rubber rings 13 and 14. The outer diameters of the rubber rings 13 and 14 or the springs 12 and 16 are substantially the same as the inner diameters of the straight tube 2. The inner diameters of the rubber rings or springs should be larger than the valve pads 5 and 12 of the two one-way valves 3 and 10. As a matter of course, the rubber rings or the springs as shown in FIG. 4a or FIG. 4b can also be attached to the upper and the lower surfaces of the tubular piston 10. FIG. 4c shows another form of the buffer means whose one-way valve 3 and tubular piston 10 are both made of magnetic material and in which a ring 17 made of magnetic material is set at the upper end wall in the straight tube 2. Their magnetic poles are disposed so that the magnetic polarities between each two neighboring faces are identical, e.g., while the upper end of the one-way valve 3 appears to be a South pole, the lower end of the tubular piston 10 also appears to be a South pole and while the upper end face of the tubular piston 10 appears to be a North pole, the lower end of the magnetic ring 17 also appears to be a North pole; and Vice Versa. In this way, according to the principle of repelling between two like poles, while the tubular piston 10 moves close to the one-way valve 3 or the magnetic ring 17, its speed will naturally slow down under the action of the repelling force which plays a buffer role.
The siphon pipe of the present invention has a simpler structure and a lower cost; it can be easily operated and its very portable.
The content as shown in the above specification and attached drawing is only for description use. It can be seen, although the present invention has been described with reference to specific apparatus components and arrangements thereof, it will nontheless be understood that still other embodiments will become apparent which are within the spirit and scope of the present invention defined in the following claims.
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|US442696 *||17 Feb 1890||16 Dic 1890||Siphon for cans|
|US1567570 *||8 Ago 1924||29 Dic 1925||Catron Mfg Company||Liquid-dispensing system|
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|*||CN86203750A||Título no disponible|
|DE59245C *||Título no disponible|
|FR1085123A *||Título no disponible|
|Patente citante||Fecha de presentación||Fecha de publicación||Solicitante||Título|
|US6283137||29 Feb 2000||4 Sep 2001||Steven Joseph Malecki||Siphon assembly with one way priming valve|
|US6419468 *||15 Ene 2002||16 Jul 2002||John M. Kemp||Reciprocating siphon suction pump|
|US8851101 *||9 Abr 2012||7 Oct 2014||Mark Scheland||Siphon mechanism|
|US20050019181 *||25 Jul 2003||27 Ene 2005||Hsiang-Yun Wang||Electromagnetic pump|
|US20070289907 *||11 Jun 2007||20 Dic 2007||Vanhulzen Chad||System and methods for maintaining an aquarium ecosystem|
|US20110048561 *||2 Sep 2009||3 Mar 2011||Marotta Stacey L||Zero-pitch pipe|
|DE9407436U1 *||29 Abr 1994||14 Jul 1994||Crull Roland||Flüssigkeitsheber|
|WO2005017357A1 *||5 Ago 2003||24 Feb 2005||Chen, Chung Chin||Electromagnetic pump|
|WO2010079364A1 *||11 Ene 2010||15 Jul 2010||Peter George Goodman||An apparatus and method for a liquid siphon|
|Clasificación de EE.UU.||222/204, 222/416, 137/151|
|Clasificación cooperativa||Y10T137/2911, B67D7/007|
|13 Sep 1994||REMI||Maintenance fee reminder mailed|
|5 Feb 1995||LAPS||Lapse for failure to pay maintenance fees|
|18 Abr 1995||FP||Expired due to failure to pay maintenance fee|
Effective date: 19950208